University of Toyama Graduate School of Science and Engineering
University of Toyama Graduate School of Science and Engineering
University of Toyama Graduate School of Science and Engineering
University of Toyama Graduate School of Science and Engineering
University of Toyama Graduate School of Science and Engineering
Kanazawa University Division of Functional Genomics, Advanced Science Research Center
Kanazawa University Division of Functional Genomics, Advanced Science Research Center
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
宇宙利用シンポジウム 第23回 平成18年度
雑誌名(英)
Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium
ページ
382 - 384
発行年
2007-03
抄録（英）
Plant life cycle consists of successive phases of vegetative and reproductive growth. The effects of altered gravity conditions on reproductive growth is poorly understood compared to vegetative growth, although understanding the effects is especially important not only to reveal how plants evolved under gravity on earth but to develop agriculture in space. In the present study, we examined the effects of hypergravity conditions on gene expression during reproductive growth in Arabidopsis. Microarray analysis (44 K) was performed to identify genes that are modulated in expression in response to hypergravity treatment in flower buds. Plants were grown for 20 to 26 days before exposure to hypergravity at 300 x g for 24 h. Total RNA was isolated from the flower buds (stage 1-12 according to Smyth et al. (1990)) after hypergravity treatment. Our results showed that several genes involved in reproductive growth were expressed at less than 0.2-fold levels under hypergravity condition, suggesting that expression of genes involved in flower, embryo, and seed development was suppressed under hypergravity.
高等植物の生活環と重力環境:過重力環境が生殖生長に与える影響
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